8=3x+4(-2x)

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Solution for 8=3x+4(-2x) equation:


Simplifying
8 = 3x + 4(-2x)

Remove parenthesis around (-2x)
8 = 3x + 4 * -2x

Multiply 4 * -2
8 = 3x + -8x

Combine like terms: 3x + -8x = -5x
8 = -5x

Solving
8 = -5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '5x' to each side of the equation.
8 + 5x = -5x + 5x

Combine like terms: -5x + 5x = 0
8 + 5x = 0

Add '-8' to each side of the equation.
8 + -8 + 5x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 5x = 0 + -8
5x = 0 + -8

Combine like terms: 0 + -8 = -8
5x = -8

Divide each side by '5'.
x = -1.6

Simplifying
x = -1.6

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